using System;

using System.Collections.ObjectModel;

​

/* TODO: Develop logic that will add all items from _list1 that are not already present into _list2.  Items should be added into specific

     * index positions according to the following rule: if DisplaySequence is not equal to zero, insert into the correct position according

     * to that value; if DisplaySequence is equal to zero insert alphabetically according to the ItemName. The below foreach statement should

     * output in the following order:

     * 

     * 0001 - Advacado

     * A001 - Deodorant

     * A0ZZ - Hairspray

     * A002 - Toothpaste

     */

public class Program

{

    public static void Main()

    {

        ObservableCollection<MyItems> _list1 = new ObservableCollection<MyItems>();

        _list1.Add(new MyItems("A001", "Deodorant", 10));

        _list1.Add(new MyItems("A0ZZ", "Hairspray", 20));

        _list1.Add(new MyItems("A002", "Toothpaste", 30));

        _list1.Add(new MyItems("0001", "Advacado", 0));

        ObservableCollection<MyItems> _list2 = new ObservableCollection<MyItems>();

        _list2.Add(new MyItems("A001", "Deodorant", 10));

        _list2.Add(new MyItems("A002", "Toothpaste", 30));

        //Logic Here

        Console.WriteLine("Press any key to exit.");

        Console.ReadKey();

    }

}

​

class MyItems

{

    public MyItems(string _itemName, string _itemDescription, int _displaySequence)

    {

        ItemName = _itemName;

        ItemDescription = _itemDescription;

        DisplaySequence = _displaySequence;

    }

​

    public string ItemName { get; set; }

    public string ItemDescription { get; set; }

    public int DisplaySequence { get; set; }

}